单词：small and special purpose electric machines
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Technology Report - How to Do It: Making Paper by Hand This is the VOA Special English Technology Report. The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley. In those days, paper was made from st
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AMERICAN MOSAIC - Questions from Listeners About How Americans Vote / Queen Latifah Explores a Musical World Before Rap By Broadcast: Friday, October 15, 2004 (MUSIC) DOUG JOHNSON: Welcome to AMERICAN
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This is the VOA Special English Development Report. The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley. In those days, paper was made from strips of the papyrus plant. Modern paper-making began
VOA慢速英语2009年（七）月
This is the VOA Special English Development Report. The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley. In those days, paper was made from strips of the papyrus plant. Modern paper-making began
VOA慢速英语2008年（二）月
Small Electric Jolts Reset Heart Rhythm in Animals For decades, a powerful electric shock has been a standard way to treat someone whose heart has stopped. But a new study suggests normal heart rhythm can also be restored through a rapid series of sa
VOA标准英语2011年(七月)